Benadryl Side Effects on Brain Health and Dementia Risk First-generation antihistamines like diphenhydramine (Benadryl) block histamine but also strongly block acetylcholine, a neurotransmitter essential for attention and memory. That anticholinergic effect explains many of the cognitive risks. 🧠 Memory problems and slower thinking Diphenhydramine crosses the blood–brain barrier and impairs attention, working memory, and reaction time. Controlled studies show worse vigilance and cognitive perfo

2.9M views · 14K reactions | Benadryl has a lot of side effects and there are better options! Make sure you are following @rubin_allergy, as he is an allergy expert and agrees, Benadryl is not “fire” #allergy #medication #doctor #sleep #emergency @thatsleepdoc Disclaimer: For educational and entertainment purposes only and should not be regarded as medical advice or replace the advice of your physician | Dr.Beachgem10 | Facebook